package lab02.test12;

/**
 * Created by Administrator on 2017-10-20.
 */
public class Shape {

    // 1属性

    // 2行为：求面积和周长
    double area(){
        return 0;
    }

    double perimeter(){
        return 0;
    }

    // 3构造函数
    Shape(){}
}
